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DIY 3D printed foil

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TomW
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Re: DIY 3D printed foil

Postby TomW » Thu Jul 30, 2020 9:41 pm

fluidity wrote:
Thu Jul 30, 2020 11:48 am
TomW wrote:
Wed Jul 29, 2020 8:39 pm
Soon, I hope, a foil company will work with Arevo and 3D print a front, rear wing and fuselage in one unit, plus mast in thermoplastic carbon fiber. It would be really cool to have the whole thing in one piece just for the challenge.
Add 3d printed board.
https://www.theverge.com/21318648/super ... rice-specs
It's quite possible but anyone with a printer able to print in nylon powder or similar good structural material is usually incentivised to churn out small high priced items for many customers. The size of printer required to print a one piece front wing in a laser sintering process is pretty huge. These sorts of projects are done for love, not money. Next time I print out a front wing the size of the one I'm currently using, it's going to keep the printer busy for about 4 days.
the Arevo people are printing aerospace parts in thermoplastic carbon uni directional. Its not a home printer.

TomW
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Re: DIY 3D printed foil

Postby TomW » Thu Jul 30, 2020 9:43 pm

" carbon " fdm filament is not stronger or stiffer than plain pla or abs. I read an engineering article that did extensive and accurate tests.

TheJoe
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Re: DIY 3D printed foil

Postby TheJoe » Thu Jul 30, 2020 10:16 pm

Michaelr123 wrote:
Thu Jul 30, 2020 3:27 pm
ah understood. I was curious if anyone had luck printing using a fiber reinforced plastic to print wings directly.

thanks!
It would not matter if it was carbon plastic. Your putting it down in layers and that is where it will break at.

kollac
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Re: DIY 3D printed foil

Postby kollac » Thu Jul 30, 2020 10:50 pm

TomW wrote:
Thu Jul 30, 2020 9:43 pm
" carbon " fdm filament is not stronger or stiffer than plain pla or abs. I read an engineering article that did extensive and accurate tests.
Check out NorskTitanium. 3d print aerospace grade titanium parts. Their North American plant is in my town. Bet you they could print us some sweet parts :)

TomW
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Re: DIY 3D printed foil

Postby TomW » Fri Jul 31, 2020 4:33 pm

kollac wrote:
Thu Jul 30, 2020 10:50 pm
TomW wrote:
Thu Jul 30, 2020 9:43 pm
" carbon " fdm filament is not stronger or stiffer than plain pla or abs. I read an engineering article that did extensive and accurate tests.
Check out NorskTitanium. 3d print aerospace grade titanium parts. Their North American plant is in my town. Bet you they could print us some sweet parts :)
Be great for a slim fuselage. Might be heavy for wings, but would look sick polished up !!

Or 1mm thick titanium, hollow wings...you could do grinds off the rocks. Bulletproof.

Now you got me thinking...you could even do hydroformed titanium sheets (?) and robotically weld them together and CNC the seam.
Even hydroformed aluminum would be tougher and light.

nixmatters
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Re: DIY 3D printed foil

Postby nixmatters » Fri Jul 31, 2020 4:42 pm

It's getting interesting here :thumb:

fluidity
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Re: DIY 3D printed foil

Postby fluidity » Sat Aug 01, 2020 8:16 am

Michaelr123 wrote:
Thu Jul 30, 2020 3:27 pm
ah understood. I was curious if anyone had luck printing using a fiber reinforced plastic to print wings directly.

thanks!
There was someone on here who 3D printed some pretty thick profile wings with steel reinforcement voids.

Personally I think PLA+ is perfectly adequate for a core. Cheap, prints well. As above though, use a closed infill. I founf prussaslicer has cubic infil which is perfect. Needs a fine enough layer height so the pyramids in the infill get good wall overlap though.

My biggest learning off this one on the composite layup though, is to avoid kevlar or other aramids (even on my inside layer) because it makes sanding the trailing edge thin pretty much pointless, it will just fuzz up. Next time I'll likely do the whole thing in basalt.

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Re: DIY 3D printed foil

Postby BalsaMichel » Sat Aug 01, 2020 9:21 am

What about building an inner wing as strucural base and using the printed parts only as kind of outside hull with a thickness of 3-6mm for example? Sure it will be sensible for ground impacts and so on but it will be possible to test a lot of new stuff like foil types and thickness without the need of building a new wing every time.

Micha

fluidity
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DIY CAD ultra-concave wave twintips 1500 and 130mm with my own fin designs. Easy upwind, awesome carving. Switch Nitro 10m V7, Naish 5.3m Wing. Now focussing on Wingsurfing to rise to a new challenge. Building my own foils from my CAD design and 3D prints, built a CNC machine last year and now cutting designs with CNC as well as 3D printing.
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Re: DIY 3D printed foil

Postby fluidity » Sun Aug 02, 2020 2:48 am

BalsaMichel wrote:
Sat Aug 01, 2020 9:21 am
What about building an inner wing as strucural base and using the printed parts only as kind of outside hull with a thickness of 3-6mm for example? Sure it will be sensible for ground impacts and so on but it will be possible to test a lot of new stuff like foil types and thickness without the need of building a new wing every time.

Micha
Hi Micha,
Maximum tensile and compression stresses are on the skin of objects. 3D printing a wing can take days.... There is fluid dynamic software for testing, it's not going to simulate rider input and changing water conditions very well but that's up to the desinger anyway.

fluidity
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Local Beach: Ngati Toa, Plimmerton, Titahi Bay, Waikanae, Petone, Seatoun, Lyall Bay, Eastbourne, Lake Wairarapa
Favorite Beaches: Plimmerton
Style: Wave, jump
Gear: Late model Switch kites element and nitros,
DIY CAD ultra-concave wave twintips 1500 and 130mm with my own fin designs. Easy upwind, awesome carving. Switch Nitro 10m V7, Naish 5.3m Wing. Now focussing on Wingsurfing to rise to a new challenge. Building my own foils from my CAD design and 3D prints, built a CNC machine last year and now cutting designs with CNC as well as 3D printing.
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Re: DIY 3D printed foil

Postby fluidity » Mon Aug 17, 2020 10:35 am

Some updates on the pinshape site(at top) and I found 3.5deg stabiliser negative angle of incidence seems to be the sweet spot. Haven't tried 3deg yet, it may be enough. 4deg is too much pitching up of the nose.
I'm still waiting on enough learner wind to get up on foil but have a kitboard to rig it on also.

Really pleased so far with how it glides a board by hand but I'm a bit heavy at the moment, 108kg so I need a bit of wind to get started :D
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